<template>
    <div class="todo-header">
        <input type="text" placeholder="请输入你的任务名称，按回车键确认" v-model='title' @keyup.enter="add"/>
    </div>
</template>

<script>
    import {nanoid} from 'nanoid';
    export default {
        name:'MyHeader',
        data(){
            return{
                title:''
            }
        },
        methods:{
            // add(e){
            //     console.log(e.target.value);
            // }
            add(){
                //console.log(this.title);
                if(!this.title.trim()) return alert("输入不能为空")
                const todoObj = {id:nanoid(),title:this.title,done:false}
                // this.addTodo(todoObj)
                this.$emit('addTodo',todoObj)
                this.title = ""
            }
        }
    }
</script>

<style scoped>
  /*header*/
  .todo-header input {
    width: 560px;
    height: 28px;
    font-size: 14px;
    border: 1px solid #ccc;
    border-radius: 4px;
    padding: 4px 7px;
  }

  .todo-header input:focus {
    outline: none;
    border-color: rgba(82, 168, 236, 0.8);
    box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
  }
</style>